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In the subway, the alarm will ring when the subway will be closed, in order to remind people do not get on the subway. But people often rushed into the subway , so that they were clamped.
we designed the new "red infrared door" in a more intuitive visual way in order to prevent passengers from rushing into the subway after the bell rang.
Hunan University
School of Design
Changsha, China
SHI ZHONG FAN,
Hunan University